rclock.h

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- *//* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is the Netscape Portable Runtime (NSPR). * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998-2000 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** *//*** C++ access to NSPR locks (PRLock)*/#if defined(_RCLOCK_H)#else#define _RCLOCK_H#include "rcbase.h"#include <prlock.h>class PR_IMPLEMENT(RCLock): public RCBase
{
public:
RCLock();
virtual ~RCLock();
void Acquire(); /* non-reentrant */void Release(); /* should be by owning thread */friendclass RCCondition;
private:
RCLock(const RCLock&); /* can't do that */void operator=(const RCLock&); /* nor that */
PRLock *lock;
}; /* RCLock *//*** Class: RCEnter**** In scope locks. You can only allocate them on the stack. The language** will insure that they get released (by calling the destructor) when** the thread leaves scope, even if via an exception.*/class PR_IMPLEMENT(RCEnter)
{
public:
~RCEnter(); /* releases the lock */
RCEnter(RCLock*); /* acquires the lock */private:
RCLock *lock;
RCEnter();
RCEnter(const RCEnter&);
void operator=(const RCEnter&);
void *operator new(PRSize) { returnNULL; }
voidoperator delete(void*) { }
}; /* RCEnter */inline RCEnter::RCEnter(RCLock* ml) { lock = ml; lock->Acquire(); }
inline RCEnter::~RCEnter() { lock->Release(); lock = NULL; }
#endif /* defined(_RCLOCK_H) *//* RCLock.h */